1998/08/26 by Jörg Frauendiener, J. Frauendiener · 3 citations
Mathematics · Physics and Astronomy · #Algebraic and Geometric Analysis #Numerical methods in inverse problems #advanced mathematical theories #gr-qc
paper · pdf · doi:10.1088/0264-9381/17/2/308
published as Class.Quant.Grav. 17 (2000) 373-387 · LaTeX2e,13 pages,2 figures
arxiv created 1998/08/26 · openalex publication_date 1999/12/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We discuss the issue of radiation extraction in asymptotically flat spacetimes within the framework of conformal methods for numerical relativity. Our aim is to show that there exists a well defined and accurate extraction procedure which mimics the physical measurement process. It operates entirely intrinsically within + so that there is no further approximation necessary apart from the basic assumption that the arena should be an asymptotically flat spacetime. We define the notion of a detector at infinity by idealizing local observers in Minkowski space. A detailed discussion is presented for Maxwell fields and the generalization to linearized and full gravity is performed by way of the similar structure of the asymptotic fields.